1 # /* Copyright (C) 2001
3 # * http://www.housemarque.com
5 # * Permission to copy, use, modify, sell and distribute this software is
6 # * granted provided this copyright notice appears in all copies. This
7 # * software is provided "as is" without express or implied warranty, and
8 # * with no claim as to its suitability for any purpose.
11 # /* Revised by Paul Mensonides (2002) */
13 # /* See http://www.boost.org for most recent version. */
15 # ifndef BOOST_PREPROCESSOR_LIST_AT_HPP
16 # define BOOST_PREPROCESSOR_LIST_AT_HPP
18 # include <boost/preprocessor/config/config.hpp>
19 # include <boost/preprocessor/list/adt.hpp>
20 # include <boost/preprocessor/list/rest_n.hpp>
22 # /* BOOST_PP_LIST_AT */
24 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
25 # define BOOST_PP_LIST_AT(list, index) BOOST_PP_LIST_FIRST(BOOST_PP_LIST_REST_N(index, list))
27 # define BOOST_PP_LIST_AT(list, index) BOOST_PP_LIST_AT_I(list, index)
28 # define BOOST_PP_LIST_AT_I(list, index) BOOST_PP_LIST_FIRST(BOOST_PP_LIST_REST_N(index, list))
31 # /* BOOST_PP_LIST_AT_D */
33 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
34 # define BOOST_PP_LIST_AT_D(d, list, index) BOOST_PP_LIST_FIRST(BOOST_PP_LIST_REST_N_D(d, index, list))
36 # define BOOST_PP_LIST_AT_D(d, list, index) BOOST_PP_LIST_AT_D_I(d, list, index)
37 # define BOOST_PP_LIST_AT_D_I(d, list, index) BOOST_PP_LIST_FIRST(BOOST_PP_LIST_REST_N_D(d, index, list))